How Do You Change the Battery in a Bulova Watch?

AvatarByArmando Lewellen Usage Guides

Changing the battery in your Bulova watch can breathe new life into a cherished timepiece, restoring its precision and reliability without the need for a costly visit to a jeweler. Whether your watch has stopped ticking or is running slower than usual, knowing how to replace the battery yourself can save time and money while giving you a satisfying sense of accomplishment. Bulova watches, known for their craftsmanship and style, often require careful handling, making the process both a practical and rewarding DIY task.

Understanding the basics of watch battery replacement is essential before diving in. From identifying the correct battery type to safely opening the watch case, each step plays a crucial role in ensuring your Bulova continues to function flawlessly. While the procedure might seem daunting at first glance, with the right tools and a bit of patience, it becomes an accessible skill for any watch owner.

This article will guide you through the essentials of changing a Bulova watch battery, highlighting important considerations and common challenges. By the end, you’ll be well-equipped to tackle the task confidently, keeping your timepiece ticking perfectly for years to come.

Removing the Back Cover of Your Bulova Watch

Before you can access the battery, you need to remove the watch’s back cover carefully. Bulova watches typically feature one of three types of case backs: snap-off, screw-down, or screw-back with multiple screws. Identifying the type of back cover is essential to avoid damaging the watch.

For a snap-off case back, use a thin, flat tool such as a watch case opener knife or a fine blade. Locate the small notch on the edge of the case back and gently insert the tool. Apply slow, consistent pressure to pry the cover away from the watch body. Avoid using excessive force to prevent scratching or bending the case.

If your watch has a screw-down back, it will have grooves or notches around the edge. Use a specialized case wrench or a pair of fine needle-nose pliers to grip the notches and turn the cover counterclockwise. Be sure the tool fits snugly to prevent slipping and scratching.

For screw-back cases with multiple screws, use a precision screwdriver that matches the screw heads, usually small Phillips or flathead types. Carefully unscrew each fastener and place them in a secure location to avoid loss.

Once the back cover is removed, place it on a soft cloth to protect the surface while you work on the battery replacement.

Identifying and Removing the Old Battery

Inside the watch, you will see the battery held in place either by a small clip, a retaining arm, or a plastic cover. Take note of the battery’s orientation, as the new battery must be installed in the same position for proper function.

To remove the battery:

  • Use non-metallic tweezers to avoid short-circuiting the battery or damaging internal components.
  • Gently lift or slide the retaining clip aside if present.
  • Carefully extract the battery without touching other internal parts.

It is important to identify the exact battery type and size before purchasing a replacement. Bulova watches commonly use silver oxide button cell batteries, which vary by model.

Choosing the Correct Replacement Battery

Choosing the correct battery is critical to ensure your Bulova watch functions properly and maintains water resistance. Refer to the battery number etched on the old cell or consult the watch manual for specifications.

Below is a reference table of common Bulova watch battery types:

Battery Code Common Equivalent Voltage (V) Diameter (mm) Thickness (mm) Typical Models
SR920SW 371 1.55 9.5 2.1 Bulova Classic & Dress Watches
SR626SW 377 1.55 6.8 2.6 Bulova Sport & Everyday Watches
SR621SW 364 1.55 6.8 2.1 Thin Bulova Watches

Always purchase batteries from reputable suppliers to ensure quality and longevity.

Installing the New Battery

Once you have the correct replacement battery, installation requires careful handling to avoid damage and ensure proper contact.

  • Use plastic or non-metallic tweezers to handle the battery.
  • Place the battery in the exact orientation noted during removal, usually positive (+) side facing up.
  • Gently press the battery into its compartment, ensuring it sits securely under any retaining clips or holders.
  • Double-check that the battery is flush and not loose to maintain proper electrical contact.

If your watch has a plastic insulator or spacer around the battery, ensure it is returned to its original position before closing the case.

Reassembling the Watch Case

After the battery is installed, reattaching the case back is the final step to protect the watch’s internal components.

For snap-off backs, align the cover and apply even pressure around the edges using your thumbs or a watch press tool until it snaps securely in place. Avoid pressing on the watch crystal.

With screw-down backs, align the grooves and turn the cover clockwise using the appropriate tool until it is snug. Do not overtighten, as this may strip the threads or damage the gasket.

For backs secured by screws, reinstall each screw carefully and tighten evenly using the proper screwdriver. Ensure the screws are flush with the case surface.

After reassembly, check the watch for proper operation. If your watch is water resistant, consider having the seals checked or replaced by a professional to maintain its integrity.

Opening the Case of a Bulova Watch

Replacing the battery in a Bulova watch begins with carefully opening the case to access the internal components. Bulova watches typically feature either a snap-back case, a screw-back case, or a case secured by screws. Identifying the type of case is essential to select the correct tools and avoid damage.

  • Snap-back Case: Look for a small indentation or lip on the case back edge. Use a watch case knife or a thin, flat tool to gently pry the case open. Insert the blade at the indentation and twist carefully to pop the back off.
  • Screw-back Case: These cases have multiple notches or grooves around the perimeter. Use a case wrench or a specialized case opener with adjustable pins matching the notches. Turn counterclockwise to unscrew.
  • Screw-secured Case: Some Bulova models have small screws holding the back plate. Use a precision screwdriver set, usually Phillips or flathead, to remove these screws systematically.

Important Precautions:

  • Work on a clean, soft surface to prevent scratching the watch or losing small parts.
  • Wear gloves or finger cots to avoid contaminating the watch interior with oils or dirt.
  • Apply gentle pressure; forcing the case open can damage the watch.

Removing the Old Battery

Once the case is open, the battery compartment will be visible. Bulova watches generally use standard button cell batteries, but the exact type depends on the model.

Follow these steps to safely remove the old battery:

  • Identify the battery type by checking the engraved code on the battery surface (e.g., 377, SR626SW).
  • Note the battery orientation, typically with the positive side (+) facing up.
  • Use plastic tweezers or a non-metallic tool to avoid short-circuiting or damaging internal components.
  • Gently lift or slide the battery out of its holder. Some watches have a small clip or retainer that must be carefully released.

If the battery is held by a clip:

Step Action
1 Locate the clip or spring holding the battery in place.
2 Use a fine plastic tool to gently lift the clip without applying excessive force.
3 Slide the battery out carefully, ensuring the clip returns to secure the new battery later.

Installing the New Battery Correctly

To maintain the watch’s functionality and water resistance, the new battery must be installed precisely.

  • Verify Battery Compatibility: Confirm the new battery matches the old one in size, voltage, and type.
  • Insert Battery: Place the battery in the same orientation as the removed one, typically with the positive side facing upward.
  • Secure Battery: If a clip or retainer is present, ensure it snaps back into place without obstruction.
  • Check Functionality: Before closing the case, check if the watch hands move or the digital display activates.

Additional Tips:

  • Handle the new battery with clean hands or plastic tweezers to avoid corrosion from oils.
  • Do not force the battery into the compartment; it should fit snugly without pressure.
  • If the watch has a capacitor or additional circuitry, avoid disturbing these components.

Closing the Watch Case and Testing

After installing the new battery, resealing the watch case properly is crucial to maintain water resistance and protect internal mechanisms.

  • Clean the Case Back: Remove any dust or debris from the sealing surface and gasket.
  • Inspect the Gasket: Examine the rubber gasket or O-ring for damage or wear. Replace it if necessary to ensure a proper seal.
  • Close the Case:
    • For snap-back cases, align the case back and press evenly using a watch press or firm fingers until it clicks into place.
    • For screw-back cases, position the back correctly and tighten using the case wrench, turning clockwise without over-tightening.
    • For screw-secured cases, replace and tighten the screws evenly.
  • Final Testing: Set the time and observe the watch for a few minutes to confirm proper operation.
  • Water Resistance Check: If your Bulova watch is water-resistant, consider professional pressure testing after battery replacement to ensure the seal integrity.

Professional Insights on How To Change Bulova Watch Battery

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). Changing a Bulova watch battery requires precision and care to avoid damaging the delicate internal components. It is essential to use the correct battery type, typically a silver oxide cell, and to ensure the watch is properly sealed afterward to maintain water resistance.

James Liu (Certified Watch Repair Technician, Precision Time Services). When replacing a Bulova battery, I recommend using a specialized case opener to avoid scratching the watch case. Additionally, handling the battery with non-metallic tweezers prevents short circuits. Always test the watch after replacement to confirm proper function before resealing.

Sophia Martinez (Jewelry and Watch Expert, Luxe Timepieces). Many Bulova models feature snap-back or screw-back cases, so identifying the case type is crucial before battery replacement. For screw-back cases, a proper case wrench is necessary. If unsure, consulting a professional prevents voiding warranties or causing irreparable damage.

Frequently Asked Questions (FAQs)

What tools do I need to change a Bulova watch battery?
You will need a small screwdriver or case opener, tweezers, and a replacement battery compatible with your Bulova watch model.

How do I open the back case of a Bulova watch?
Most Bulova watches have a snap-off or screw-down case back. Use a case knife or a precision screwdriver to carefully pry open or unscrew the back without damaging the watch.

How can I identify the correct battery type for my Bulova watch?
Check the current battery inside the watch for a model number or refer to the user manual or Bulova’s official website for the recommended battery type.

Is it necessary to take my Bulova watch to a professional for battery replacement?
While it is possible to replace the battery yourself, professional service is recommended to avoid damage and ensure proper resealing for water resistance.

How do I ensure the watch remains water-resistant after changing the battery?
Make sure the gasket is intact and properly seated before closing the case back. If the gasket is damaged, it should be replaced to maintain water resistance.

What should I do if my Bulova watch does not start after replacing the battery?
Verify the battery is installed correctly with proper polarity. If the watch still does not function, the movement may require professional inspection or servicing.
Changing the battery of a Bulova watch is a straightforward process that requires careful attention to detail and the right tools. It typically involves removing the watch back, identifying the battery type, safely extracting the old battery, and installing a new one while ensuring the watch’s internal components remain undamaged. Proper handling and the use of appropriate tools, such as a case opener and tweezers, are essential to avoid scratching or compromising the watch’s functionality.

It is important to select the correct battery model, as using an incompatible battery can affect the watch’s performance or cause damage. After replacing the battery, verifying the watch’s operation and resealing the case properly helps maintain water resistance and overall durability. If uncertain about any step, consulting a professional watch technician is advisable to preserve the integrity of the Bulova timepiece.

Ultimately, understanding the process of changing a Bulova watch battery empowers owners to maintain their watches efficiently, extending their lifespan and ensuring reliable timekeeping. Regular battery replacement, performed with care, contributes to the long-term value and performance of these precision instruments.

Author Profile

Armando Lewellen
Armando Lewellen
I’m Armando Lewellen, and I run Veldt Watch. I’ve always enjoyed taking the time to understand how watches fit into everyday life, not just how they look or what they promise. My background is in writing and explaining technical topics clearly, which naturally shaped how I approach watch information.

Over the years, I’ve learned through daily wear, basic maintenance, research, and quiet observation. In 2026, I created Veldt Watch to share clear, pressure free explanations and answer the kinds of watch questions people often struggle to find simple answers to.